Machine for spinning artificial silk



2 Sheets-Sheet llllllHl Filed June 11.

G. DONAGEMMA ET AL MACHINE FOR SPINNING ARTIFICIAL SILK Feb. 14, 1928.

a a i m l I 8 3 5 M MZ M WMM m MQM T w v. A GAME 5 Feb. 14, 1928.

G. DONAGEMMA ET AL MACHINE FOR SPINNING ARTIFICIAL SILK 2 Sheets-Sheet 2Filed June 11. 1924 A QM 5 M v mu mwm an W W m MM Y ME 5 Patented Feb.14, 1928.

UNITED STATES PATENT OFFICE- GIUSEPPE DONAGEMMA, PIETRO TOLINI, ANDMELCHIORRE VALENTINI, OF MILAN,

AND ERCOLE MIGOZZI, OF ROME, ITALY.

MACHINE FOR SPINNING ARTIFICIAL SILK.

Application filed June 11, 1924, Serial No. 719,446, and in Italy June11, 1923.

This invention relates to improvements in machines for manufacturing orspinning artificial silk or similar thread, and it consists of theconstructions, combinations and arrangements herein described andclaimed.

An object of the invention is to provide a frame which carries a pair ofbobbins intended to occupy positions 'one above the other in thevertical plane while thread is being wound upon one of the bobbins, saidframe being revoluble so that the unfilled bobbin can be brought intothe position of the filled bobbin, there being a brake for holding thefilled bobbin so that the thread starts upon the unfilled bobbinaccording to a peculiar action described in detail below.

Another object of the invention resides in the novel disposition of thethread distribution apparatus.

Another object of the invention is to so dispose the machines andproduce a circulation of air that the harmful gases are carried awayfrom, each of the machines, thereby avoiding detrimental effects uponthe health of the workmen.

A further object of the invention is to provide an improvement in thesystem of arrival and discharge of the various basins, thereby insuringahomogeneous mixture and a uniformity of temperature of the baths. W

Other objects and advantages appear in the following specification,reference being had to the accompanying drawing, in which Figure 1 is afront elevation (largely diagrammatic) of a portion ofa spinning machineembodying the improvements, a portion being shown in section.

Figure 2 is an end elevation of the ma- 0 chine.

Figure 3 is a diagram illustrating th {,node of winding the thread uponthe bobins.

In carrying out the invention provision is made of a support 6 .which isfixed in any appropriate manner upon the machine frame generallydesignated a. It is to be noted in Figure 1 that a number of thesupports b are shown, but inasmuch as each of these as well, as themechanism carried thereby are of identical construction, the descriptionof one will suffice for all. e

A locking device a, mounted upon the fixed support I) (Fig. 2) servesthe purpose of holding the uppermost bobbin from rotation. The lockingdevice is composed of a Each of the bobbin shafts c has a worm pinion f.The worm pinions are successively engageable with the worm gear g. Theworm gear is continuously revoluble by the gear connections w (Fig. 2)which derive motion from the main drive shaft 00 (Fig. 1). The frame 6is capable of being turned around on its stud d to engage first one thenthe other of the pinions f with the worm gear 9 and when the latterengagement occurs, driving motion is imparted to the corresponding-shafte and the bobbin 1) carried thereby.

The then uppermost shaft and bobbin are held stationary by theapplication of the lever c and its inner end member to the pinion orsome other appropriate part.

Apparatus for distributing the threads over the lower and active bobbin'2) comprises a rod h with a guide or feeder 2' through which the threadpasses from the drawing plate r. Reciprocatory or to and fro motion ofthe rod it occurs by the action of any appropriate means, for examplethe rocking action of a pivoted lever 70 (Fig. 1) which is actuated by acam Z. The foregoing distributing apparatus is known as the Z apparatus(Grant crossing).

Provision is made for the aspiration of the gases arising at the twoacid basins shown in Figure 2. conduit m disposed in proximity to the'lower basin (Fig. 2) has a plurality of openings, windows or slotss(Fig. 1) at which the gas enters to be discharged into the commoncollector n. Suction is created in the collector by any appropriatemeans, a receiver introducing the gas of the upper basin to thecollector by way of the pipe p. c h

Situated in the lower part of the machine is a conduit 0 which receivesfresh air from any suitable source and distributes the air through oneor more suitable openings y. The distribution of the fresh air as wellas the escape of the vitiatcd air is readily traced in Figure 2 by thearrows.

Mention has been made of the basins shown in Figure 2. These containacid baths. The baths in the basins arise and discharge themselves fromseveral points from the basins themselves thus obtaining the maximumhomogeneity and uniformity of temperature in the baths at all points incontact with the drawing plate.

The operation is readily understood. The bobbin frame t is revolublymounted on the stud (Z of the fixed frame I), but in ordinary operationthe application of the lever c (Fig. 2) to the upper worm pinion notonly holds the bobbin frame stationary but also prevents turning of theupper bobbin shaft (2 and the bobbin carried thereby.

The worm gear 9 revolves continuously. Upon moving the bobbin frame inthe vertical position the pinion f of the lower bobbin shaft e comesinto engagement with the gear 9 so that the bobbin 1; is turned in theclockwise direction (Fig. 3). The feeler 2' distributes the thread 8along the-bobbin. As soon as the lower bobbin is filled the lever c isreleased and the frame 2. given a 180 turn in the clockwise direction(see arrow, Fig. 3) so that the formerly empty upper bobbin is broughtinto contact with the thread. The application of the lever c to thepinion f of the upper and now full bobbin holds that bobbin stationary.The friction of the lower revolving bobbin against the thread causes thethread to start winding upon that bobbin, and after a turn or so abreakage of the thread leading from the upper bobbin occurs. The actionis very prompt and effective.

It is not an uncommon circumstance in machines of the character hereincontemplated to so dispose the bobbins that they occupy a horizontalplane while in operation. This has the disadvantage that both bobbinsare subjected to the action of acid in the small basin locatedtherebeneath, and it is readily seen that the perpetual corrosive actionof the acid causes an unwarranted destruction of bobbins with anattending large expense. As already fully brought out, the pairs ofbobbins, according to the present invention, assume positions in thevertical plane while in the operative position so that the upper andinactive bobbin is not subjected to the destructive action of the acid.But it is possible to rotate the bobbin frame If 90 from this positionso that the bobbins occupy a position in the horizontal plane therebyplacing both bobbins out of reach of the acid in cases when the drawingplate is out of Working order.

A plant devoted to the spinning of thread ordinarily employs a largenumber of the machines and in order to carry out the proposed aircirculation system the machines are so placed that the discharging freshair from the conduit 0 of one machine is directed toward the machinenext succeeding (see Fig. 2). The fresh air passes through that machineand carries away the gases as fully outlined above. The result is thatthere is a continually renewed current of air in the surroundings of thema chines so that the necessary work will be healthful rather thandetrimental to the operators.

We claim:

1. A machine for the purpose described comprising an acid bath, aplurality of pairs of shafts each carrying a bobbin, revoluble framesupon which the respective pairs of bobbin shafts are journaled, drivemeans by which one shaft of each pair is operable when the pairs ofshafts assume positions in the vertical plane, at which time thelowermost bobbin may be subjected to the action of an acid and theuppermost bobbin held free thereof, and means to then prevent revolutionof said rcvoluble means and of the uppermost bobbin shaft.

2. A machine for the purpose described comprising a fixed support havinga stud, a frame revolubly mounted upon the stud having diametricallyopposite bearings, a bobbin shaft journaled upon each of the bearingsand carrying a pinion, continuously operative driving means with whichone or the other of the pinions is engageable whereby to drive thecorresponding shaft, and means carried by the support then beingengageable with the pinion of the other and idle shaft simultaneouslypreventing rotation of said shaft and revolution of said frame upon thestud.

3. A machine for the purpose described including acid basins in whichthread is treated, a common collector including means by which gasesarising from said basin are aspirated, and a fresh air conduitincorporated in said machine having an outlet, the machines being sodisposed that the fresh air discharged by one carries said gases intothe collector of another thereby setting up a circulation of fresh airaround the machines. 5

In testimony whereof we have signed our names to this specification.

DONAGEMM A. G1 US EPPE. PIETRO TOLINI. MELCHIORRE VALENTIN I. ERCOLEMICOZZI.

